the picture is fictional and does not depict the true massive scale of the tower

It's just a painting. No one knows how big to Tower really was. And that doesn't even matter. The focus of the biblical story is the city of Babel itself. The tower is a symbol of the city’s power. And all the people in the city worshiped Satan. That's the key point then, and now.

“the Tower of Babel was actually the worship of Satan in the form of fire, the sun and the serpent." - Alexander Hislop in his book The Two Babylons, 1853